Today we took the Haiyou 50. The downside of booking with Klook is that there's no free shuttle to the Nanhai Service Center, but the overall trip is still highly recommended. If you get seasick, remember to prepare motion sickness medication, a mask, and earphones beforehand. The photos are beautiful when the weather is good. On Dongji Island, I highly recommend renting a scooter. You can register and pay before boarding. It's too hot to walk in this weather, and it takes more time to visit places on foot. With a scooter, you can enjoy the breeze, and you won't be out of breath from walking. The optional snorkeling trip at Dongyuping doesn't have too many tourists, so I found the itinerary quite relaxing, and the coach was very meticulous and professional. The tour guide, Allen, was very witty and humorous.